Harvesting Machine Travel Mode Switching with Temporary Stop and Check
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Solution Overview
Problem
Existing harvesting machines lack a robust method for transitioning between automatic and manual driving modes, particularly for complex harvest work apparatuses, where multiple conditions need to be managed to ensure smooth and safe switching between driving modes.
Innovation Solution
A harvesting machine with a travel mode switching method that includes temporary stop and check modes, allowing for stepwise transitions from automatic to manual driving and vice versa, using specific conditions such as gear shift and steering neutral positions, automatic driving stop requests, and emergency detection to ensure safe and controlled mode changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single transition mode is used for switching between automatic and manual driving, then the switching process is simple, but it cannot accommodate the complex working devices and multiple conditions of harvesting machines
Solution Approach 1:
The patent divides the transition process into multiple distinct modes: automatic driving mode, temporary stop mode, check mode, and manual driving mode. This segmentation allows each mode to handle specific conditions and device states independently, resolving the contradiction by making the transition structure complex enough to accommodate harvesting machine requirements while maintaining clear organizational boundaries
2Reliability
If multiple transition conditions are implemented for safe switching, then the safety and control are improved, but the transition process becomes more complex
Solution Approach 1:
The patent implements preliminary actions before final mode switching by introducing temporary stop mode and check mode as preparatory stages. In temporary stop mode, the vehicle stops and basic conditions are verified. In check mode, detailed verification of working devices and driving conditions occurs before allowing manual driving. This preliminary action approach enhances safety while organizing complexity into manageable sequential steps
3Object-affected harmful factors
If the vehicle is stopped during mode transition, then unexpected movements are prevented, but the transition time increases
Solution Approach 1:
The patent segments the stopping and verification process into two distinct phases: temporary stop mode for basic safety verification, and check mode for detailed condition verification. This segmentation allows the vehicle to remain stopped efficiently during critical verification steps without unnecessary delays, as each mode has a specific verification scope that can be completed systematically
Data Source
AI summary
The present disclosure includes a travel operation unit that is configured to be manually operated and includes a mode operation tool for switching between automatic driving and manual driving, a manual travel control unit that includes a manual travel mode in which manual driving is performed based an operation signal received from the travel operation unit, and an automatic travel control unit that includes an automatic travel mode in which automatic driving is performed, a temporary stop mode in which a vehicle body is temporarily stopped during automatic driving for transitioning from the automatic travel mode to the manual travel mode, and a check mode in which whether a state of the travel operation unit satisfies a manual driving transition condition required for starting manual driving is checked in transition from the temporary stop mode to the manual travel mode.